Working in a file again after a while spent outside of Affinity Designer. Incredibly disheartened to see that this bug is still around.
When I am ready to export and I am renaming slices very quickly, this bug is a massive time-waster. I want to focus any layer I want, immediately rename it, and then type my string as quickly as possible... that is it. In my experience, the string will randomly highlight itself in the middle of typing which causes the entire layer name to be erased mid-string. Or sometimes it will simply de-focus, and I will end up pressing random hotkeys for unknown amounts of time before I realize the mistake. Often, this same bug will repeat itself multiple times in the process of renaming one layer or slice...
Since reporting this over a year ago, something as simple as renaming layers continues to be the one single bug I encounter constantly.

Recently had some input issues with a Wacom tablet that seemed to be caused by macOS Sierra.
I realize in my original post, I hadn't stated that I am currently using Sierra – I don't know if the problems are related.

Also having this problem, especially with artboards. First artboard created is fine, duplicate artboards are all messed up. Not only does pixel alignment not work, but the grid is also slightly off (by subpixel increments).

Thanks Sean & Affinity team!
My current workaround is to double-click the layer, wait 2-3 seconds (roughly, I haven't timed it) before interacting with the text input whatsoever, and then naming the layer. This brief pause after activating the name edit function seems to alleviate some of the jumpy text box behavior -- but it's still a rather disruptive workaround if I'm being honest.
I'll follow this thread for updates! Thanks again for the quick reply!

Hi,
I have a terribly frustrating bug with renaming layers. I've seen this posted before, and the bug was said to be fixed in an update (which has already come). When typing a new name for layers, the text field constantly de-focuses itself – this happens so often, and so regularly, that naming layers is essentially a completely lost function for me. Layer naming is a critical function that I can not afford to lose. It can take me sometimes longer than an entire minute to successfully rename a single layer, artboard or group.
I am using a MacBook pro with external monitor. Happens with a wired mouse, wireless magic mouse, external keyboard and MacBook Pro keyboard -- there is no known issues with any input or display device. This bug also happens with the latest version of AD from the Mac App Store, as well as with the Beta. The bug occurs on layers of all types, as well as groups and artboards. This bug, for me, is only observed in the Layers palette -- all other palettes are fine with input.
In the attached video, you can see me renaming layers. In this video, the first layer is renamed correct. Then I add another layer and try to rename that one, to show how the chaos unfolds... While editing the name of this new layer, I never once press return to commit the name at any point in the video. The layer constantly loses focus, commits the incomplete name, and my typing fingers then punch random hotkeys...
This is incredibly frustrating for work. I am a super loud proponent of AD, I love all that if offers... but this bug alone is enough to ruin my workflow and make designing in AD an absolute headache.
Previous posts for reference:
https://forum.affinity.serif.com/index.php?/topic/18336-new-layer-naming/-- Very last comment, it goes unaddressed.
https://forum.affinity.serif.com/index.php?/topic/15832-bug-141-renaming-layers-broken/-- Caught in a beta, apparently logged but never addressed.
https://forum.affinity.serif.com/index.php?/topic/24660-rename-layer-with-obstacles/-- Similar problem, and marked as fixed.
I am pulling my hair out over this one.
Thanks for all your hard work,
-WV
affinity-rename-layers.mov